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Fifty years ago, most people’s daily levels of activity were equivalent to w
Fifty years ago, most people’s daily levels of activity were equivalent to w
游客
2024-09-25
3
管理
问题
Fifty years ago, most people’s daily levels of activity were equivalent to walking three to five miles a day. Today, the【C1】______ person fails to【C2】______that distance in a week. It’s【C3】______ the ratio of fatness has soared— with serious implications for health.
What we have【C4】______in convenience from labour-saving devices over the past half-century, we have paid for【C5】______a sharp decline in physical activity. We use cars, buses or trains to【C6】______ work: our children are【C7】______to school: elevators and lifts have replaced【C8】______stairs in shopping centres, offices and apartment blocks. Washing machines, vacuum cleaners, dishwashers and electric mowers all reduce the effort required to【C9】______a clean and tidy home. Almost one third of adults【C10】______over ten hours sitting down every day, adding【C11】______a staggering average of 32 years and four months over a lifetime.【C12】______ surprising, then, that researchers【C13】______this lifestyle for our weight gain.
Of course, our diets have changed, too,【C14】______the fact is that we consume fewer calories now than in the 1960s. So what is the【C15】______? The secret is integrated exercise. This【C16】______going about your normal daily life—but doing it with enthusiasm. It might mean standing to【C17】______the phone and tapping your feet on the floor as you work. It means never taking the car when you could walk: it means standing on short train and bus【C18】______, or walking at a pace【C19】______ you feel you might break into a run if you were to go any【C20】______. [br] 【C19】
选项
A、when
B、which
C、who
D、where
答案
D
解析
语法题。句意为:……或者以再快一点就会跑起来的速度走路。正确划分句子结构是解题的关键。此处[D]where作为关系副词引导定语从句,修饰先行词at a pace,表示“以怎样的速度”,定语从句的意思是:如果走得再快一点,就会跑起来,故应选[D]。
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